THERMACTOR System: Description

The Thermactor Exhaust Emission Control system reduces carbon monoxide (CO) and hydrocarbon (HC) content of exhaust gases. It injects fresh air into the exhaust gas stream which continues combustion of unburned gases. A typical system consists of an air supply pump, air by-pass valve, centrifugal filter, check valve(s), air control valve, air manifold and air hoses.

Individual systems may vary in number and type of components, depending upon engine size and application. The Managed Thermactor Air (MTA) system uses the same basic components as standard system, but "manages" thermactor air according to operating conditions. Some models are equipped with Thermactor II system. It uses a Pulse Air Valve (PAV) instead of an air pump. Another system is the Extended Idle Air By-Pass system, it is used to release secondary thermactor air to the atmosphere.